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Theory

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Procedure

Simulation

Posttest

References

Feedback

Intrinsic Reaction Co-ordinate for a SN2 reaction

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The change in energy along the IRP is:

a: Energy increases on following the IRP from the TS to the minima Explanation

Explanation

b: Energy can increase or decrease depending upon the geometry of the transition state Explanation

Explanation

c: Energy decreases on following the IRP from the TS to the minima Explanation

Explanation

d: Energy remains constant throughout the IRP path Explanation

Explanation

The IRC s, can be expressed as:

a: s=2*∑sjqj Explanation

Explanation

b: s=(∑sjqj)/2 Explanation

Explanation

c: s=(∑sjqj)^½ Explanation

Explanation

d: s=∑sjqj Explanation

Explanation

On moving along the IRP, the energy along the remaining 3N-7 (non-linear molecules)/3N-6 (linear molecules) coordinates is:

a: maximized Explanation

Explanation

b: minimized Explanation

Explanation

c: maximized for half of the coordinates Explanation

Explanation

d: None of the above Explanation

Explanation

The gradient is:

a: Largest along the IRP and zero for the remaining 3N-6/3N-7 directions Explanation

Explanation

b: Smallest along the IRP Explanation

Explanation

c: Zero along the IRP and non-zero along the remaining 3N-6/3N-7 directions Explanation

Explanation

d: Cannot be defined Explanation

Explanation

The IRP is followed until:

a: The gradient along the IRP is maximum Explanation

Explanation

b: The gradient along the IRP is negative Explanation

Explanation

c: The gradient along the IRP cannot be defined Explanation

Explanation

d: The gradient along the IRP becomes zero Explanation

Explanation

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